Patents by Inventor Christopher B. Leger

Christopher B. Leger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Oxidant lancing nozzle
    Patent number: 5580237
    Abstract: An oxidant lancing nozzle and lancing method wherein first and second oxidant streams are injected into a combustion zone under defined conditions enabling the lancing of oxygen to augment a main combustion reaction with improved flame stability and unchanged or even reduced NO.sub.x formation.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: December 3, 1996
    Assignee: Praxair Technology, Inc.
    Inventor: Christopher B. Leger
  • Oxygen lancing for production of cement clinker
    Patent number: 5572938
    Abstract: Oxygen is lanced into the main combustion reaction of a cement kiln to increase heat transfer to the clinker bed and to increase clinker production. Oxygen is separately lanced along the floor, i.e. the lowest wall of the kiln, to delay mixing with the flame to provide deep staging. The deeply staged oxygen flow is adjusted frequently to control emissions and stabilize the burning zone while the primary oxygen flow is maintained constant.
    Type: Grant
    Filed: February 13, 1995
    Date of Patent: November 12, 1996
    Assignee: Praxair Technology, Inc.
    Inventor: Christopher B. Leger